F5 BIG-IP iControl REST Shell Permission Bypass (CVE202640462)
CVE-2026-40462 Published on May 13, 2026

iControl REST and tmsh vulnerability
Incorrect permission assignment vulnerabilities exist in iControl REST and TMOS shell (tmsh) undisclosed command which may allow an authenticated attacker to view sensitive information.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-40462 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
NONE
Availability Impact:
NONE

Weakness Type

Incorrect Permission Assignment for Critical Resource

The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors. When a resource is given a permissions setting that provides access to a wider range of actors than required, it could lead to the exposure of sensitive information, or the modification of that resource by unintended parties. This is especially dangerous when the resource is related to program configuration, execution or sensitive user data.


Products Associated with CVE-2026-40462

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F5 Networks Big Ip
 

Affected Versions

F5 BIG-IP: